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1.
Compound word formed from Kweef, Fart and Barf.

(1)A simultaneous expulsion of gas from a womans vagina and anus (Kwart) so disgusting that after inhaling the odor, it usually induces vomiting. Especially after eating chef boyardee.

(2)A phrase used towards someone you dislike
"While I was fucking my bitch she kwarfed and I threw up all over her face and tits."
or
"Look at that fucking Kwarf, he dresses like a total cunt."
by Mr. Awsome September 18, 2007
 
2.
A fart brought on by a sneeze; to do this action
I will not go to work with a cough i may kwarf in someone's cubicle.
by dumbot December 25, 2005